Thermowood Birch ThermoD () is a medium-hardness wood balancing workability and wear resistance, with a Janka hardness of 701 lbf (3118 N) and a density of about 0.62 g/cm³. It originates from thermowood finland eu.
With radial shrinkage of 1.6% and tangential shrinkage of 3% (a T/R ratio of 1.88), it is reasonably stable with normal seasonal movement. Its fiber saturation point is around 15%, below which the wood begins to shrink and move as it dries.
These figures feed directly into the Vriksai calculators below — select Thermowood Birch ThermoD in any of them to get species-specific results for weight, moisture, shrinkage and hardness.